Nasal mask



FIG. 1 is a perspective view of a nasal mask showing our new design.

FIG. 2 is an additional perspective view of the nasal mask showing our new design.

FIG. 3 is a front view of the nasal mask shown in FIG. 1.

FIG. 4 is a side view of the nasal mask shown in FIG. 1 the opposite side view being similar thereto.

FIG. 5 is a rear side view of the nasal mask shown in FIG. 1.

FIG. 6 is a top side view of the nasal mask shown in FIG. 1.

FIG. 7 is a bottom side view of the nasal mask shown in FIG. 1.

FIG. 8 perspective view of the nasal mask showing our new design.

FIG. 9 is an additional perspective view of the nasal mask showing our new design.

FIG. 10 is a front side view of the nasal mask shown in FIG. 8.

FIG. 11 is a side view of the nasal mask shown in FIG. 8 the opposite side view being similar thereto.

FIG. 12 is a rear side view of the nasal mask shown in FIG. 8.

FIG. 13 is a top side view of the nasal mask shown in FIG. 8; and,

FIG. 14 is a bottom side view of the nasal mask shown in FIG. 8.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a nasal mask, as shown and described. 